adjective - a hidden feature, message, reference etc. in a film, videogame etc.
noun - the ability to imagine or plan what will or might happen in the future and to prepare for it wisely
noun - careful thinking or planning about what might happen in the future, especially to avoid problems
adverb - inside a body, object, or structure; within rather than on the outside; within a company, system, or organization rather than from outside sources
noun - the art of producing decorative or stylized handwriting with a pen, brush, or special instruments